A hole in the ground in the shape of an inverted cone is 13 meters deep and has radius at the top of 15 meters. This cone is filled to the top with sawdust. The density, p, of the sawdust in the hole depends upon its depth, x, following the formula: kg p(x) = 2.5 1.6e-0.4x - m³ The total mass of sawdust in the conical hole is: kg

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